20400200002 has 32 divisors (see below), whose sum is σ = 38372527872. Its totient is φ = 7918133184.

The previous prime is 20400199987. The next prime is 20400200011. The reversal of 20400200002 is 20000200402.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047798 + ... + 1067089.

It is an arithmetic number, because the mean of its divisors is an integer number (1199141496).

Almost surely, 2^20400200002 is an apocalyptic number.

20400200002 is a deficient number, since it is larger than the sum of its proper divisors (17972327870).

20400200002 is a wasteful number, since it uses less digits than its factorization.

20400200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114962.

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 20400200002 its reverse (20000200402), we get a palindrome (40400400404).

The spelling of 20400200002 in words is "twenty billion, four hundred million, two hundred thousand, two".